[READY] Makes plumbing mappable and reworks hiding (#49644)

🆑
tweak: Ducts can now be hidden under tiles
code: tile hiding is now an element and way cooler and sexier
/🆑

Ducts can now be hidden under tiles
Plumbing machinery connects can now be hidden aswell
Plumbing can now also be properly mapped in without breaking anything
Plumbing component now uses the normal overlay systeem instead of being a weird exception

You can now add the /datum/element/undertile element to instantly make something hidable under tiles when appropriate.

code/game/objects/structures/safe.dm

@@ -13,7 +13,7 @@ FLOOR SAFES
 	anchored = TRUE
 	density = TRUE
 	resistance_flags = INDESTRUCTIBLE | LAVA_PROOF | FIRE_PROOF | ACID_PROOF
-	interaction_flags_atom = INTERACT_ATOM_ATTACK_HAND | INTERACT_ATOM_UI_INTERACT 
+	interaction_flags_atom = INTERACT_ATOM_ATTACK_HAND | INTERACT_ATOM_UI_INTERACT
 	var/open = FALSE		//is the safe open?
 	var/tumbler_1_pos	//the tumbler position- from 0 to 72
 	var/tumbler_1_open	//the tumbler position to open at- 0 to 72
@@ -196,16 +196,10 @@ FLOOR SAFES
 	name = "floor safe"
 	icon_state = "floorsafe"
 	density = FALSE
-	level = 1	//underfloor
 	layer = LOW_OBJ_LAYER
 
 
 /obj/structure/safe/floor/Initialize(mapload)
 	. = ..()
-	if(mapload)
-		var/turf/T = loc
-		hide(T.intact)
 
-
-/obj/structure/safe/floor/hide(var/intact)
-	invisibility = intact ? INVISIBILITY_MAXIMUM : 0
+	AddElement(/datum/element/undertile)

code/game/objects/structures/window.dm

@@ -634,7 +634,6 @@
 	smooth = SMOOTH_TRUE
 	state = RWINDOW_SECURE
 	canSmoothWith = list(/obj/structure/window/fulltile, /obj/structure/window/reinforced/fulltile, /obj/structure/window/reinforced/tinted/fulltile, /obj/structure/window/plasma/fulltile, /obj/structure/window/plasma/reinforced/fulltile)
-	level = 3
 	glass_amount = 2
 
 /obj/structure/window/reinforced/fulltile/unanchored
@@ -649,7 +648,6 @@
 	flags_1 = PREVENT_CLICK_UNDER_1
 	smooth = SMOOTH_TRUE
 	canSmoothWith = list(/obj/structure/window/fulltile, /obj/structure/window/reinforced/fulltile, /obj/structure/window/reinforced/tinted/fulltile, /obj/structure/window/plasma/fulltile, /obj/structure/window/plasma/reinforced/fulltile)
-	level = 3
 	glass_amount = 2
 
 /obj/structure/window/reinforced/fulltile/ice
@@ -657,7 +655,6 @@
 	icon_state = "ice_window"
 	max_integrity = 150
 	canSmoothWith = list(/obj/structure/window/fulltile, /obj/structure/window/reinforced/fulltile, /obj/structure/window/reinforced/tinted/fulltile, /obj/structure/window/plasma/fulltile, /obj/structure/window/plasma/reinforced/fulltile)
-	level = 3
 	glass_amount = 2
 
 /obj/structure/window/shuttle
@@ -676,7 +673,6 @@
 	smooth = SMOOTH_TRUE
 	canSmoothWith = null
 	explosion_block = 3
-	level = 3
 	glass_type = /obj/item/stack/sheet/titaniumglass
 	glass_amount = 2
 
@@ -704,8 +700,7 @@
 	smooth = SMOOTH_TRUE
 	canSmoothWith = null
 	explosion_block = 3
-	damage_deflection = 11 //The same as normal reinforced windows.
-	level = 3
+	damage_deflection = 11 //The same as normal reinforced windows.3
 	glass_type = /obj/item/stack/sheet/plastitaniumglass
 	glass_amount = 2
 	rad_insulation = RAD_HEAVY_INSULATION